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Questions and Answers
Which statement about atoms is correct?
Which statement about atoms is correct?
- Atoms of a given element are not identical
- Atoms of a given element have the same size, mass, and chemical properties (correct)
- Atoms can be created or destroyed in a chemical reaction
- Atoms of different elements are identical
What are compounds composed of?
What are compounds composed of?
- Atoms and ions
- Atoms and molecules
- Atoms of different elements (correct)
- Atoms of only one element
What happens to atoms in a chemical reaction?
What happens to atoms in a chemical reaction?
- Atoms are created
- Atoms are separated, combined, or rearranged (correct)
- Atoms are destroyed
- Atoms remain unchanged
What is the ratio of the numbers of atoms of any two elements in a compound?
What is the ratio of the numbers of atoms of any two elements in a compound?
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Who is credited with the discovery and identification of the first subatomic particle?
Who is credited with the discovery and identification of the first subatomic particle?
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What is the unit of electric charge?
What is the unit of electric charge?
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What does a chemical reaction involve?
What does a chemical reaction involve?
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